The yarn blend in this sock was created with the activity level of hiking in mind - keep dry, stay warm and comfortable. Merino wool is a natural, breathable fiber and helps to keep feet warm even when they are wet, polypropylene is water-resistant, nylon adds durability and spandex adds comfort with stretch. • Wool is naturally odor resistant • Articulated arch support • Cushioned heel and sole • 40% Merino Wool/ 40% Polypropylene/ 15% Nylon/ 5% Spandex • Made in Canada